Partial revert of #10433

The If block in this change was causing some 2D textures to be treated as if their mip 0 was a 3D Slice, this could be ascertained as the same texture viewed from different distances would render fine, but then close up would look like a decoding failure.

It also resulted in some 3D ASTC textures not being scaled appropriate leading to broken graphical effects such as the jagged TOTK recall animation being a circle, as the If block was only accepting the image based on its original info without any adjustments applied.

src/video_core/texture_cache/util.cpp

@@ -166,13 +166,6 @@ template <u32 GOB_EXTENT>
 }
 
 [[nodiscard]] constexpr Extent3D TileShift(const LevelInfo& info, u32 level) {
-    if (level == 0) {
-        return Extent3D{
-            .width = info.block.width,
-            .height = info.block.height,
-            .depth = info.block.depth,
-        };
-    }
     const Extent3D blocks = NumLevelBlocks(info, level);
     return Extent3D{
         .width = AdjustTileSize(info.block.width, GOB_SIZE_X, blocks.width),
@@ -1294,9 +1287,9 @@ u32 MapSizeBytes(const ImageBase& image) {
 
 static_assert(CalculateLevelSize(LevelInfo{{1920, 1080, 1}, {0, 2, 0}, {1, 1}, 2, 0}, 0) ==
               0x7f8000);
-static_assert(CalculateLevelSize(LevelInfo{{32, 32, 1}, {0, 0, 4}, {1, 1}, 4, 0}, 0) == 0x40000);
+static_assert(CalculateLevelSize(LevelInfo{{32, 32, 1}, {0, 0, 4}, {1, 1}, 4, 0}, 0) == 0x4000);
 
-static_assert(CalculateLevelSize(LevelInfo{{128, 8, 1}, {0, 4, 0}, {1, 1}, 4, 0}, 0) == 0x40000);
+static_assert(CalculateLevelSize(LevelInfo{{128, 8, 1}, {0, 4, 0}, {1, 1}, 4, 0}, 0) == 0x4000);
 
 static_assert(CalculateLevelOffset(PixelFormat::R8_SINT, {1920, 1080, 1}, {0, 2, 0}, 0, 7) ==
               0x2afc00);